Calpeda NM, NMD Close Coupled Centrifugal Pumps

NM, NMD Close Coupled Centrifugal Pumps
Calpeda NM, NMD Close Coupled Centrifugal Pumps

Construction
Close-coupled, centrifugal pumps; electric motor withextended shaft directly connected to the pump.
NM: single-impeller
NMD: with two back-to-back impellers (with axial thrust balancing).
Connections: threaded ports ISO 228/1 (BS 2779).

 

Applications
- For clean liquids without abrasives, which are non-aggressive for the pump materials ( solids content up to 0.2%).
- For water supply.
- For heating, air-conditioning, cooling and circulation plants.
- For civil and industrial applications.
- For fire fighting applications.
- For irrigation.

Operating conditions
Liquid temperature from -10 °C to +90 ° C.
Ambient temperature up to 40° C.
Total suction lift up to 7 m.
Maximum permissible working pressure up to 10 bar (16 bar for pumps NMD 25/190; NMD 32/210; NMD 40/180).
Continuous duty.

Motor
2-pole induction motor, 50 Hz (n = 2900 rpm).
NM, NMD: three-phase 230/400 V ± 10% up to 3 kW;
                               400/690 V ± 10% from 4 to 9,2 kW;
NMM, NMDM: single-phase 230 V ± 10%, with thermal protector.
Insulation class F.
Protection IP 54.
Constructed in accordance with IEC 60034.

Special features on request
- Other voltages.
- Frequency 60 Hz (as per 60 Hz data sheet).
- Protection IP 55.
- Special mechanical seal
- Higher or lower liquid or ambient temperatures

Download Calpeda NM, NMD Close Coupled Centrifugal Pumps Catalogue